Don't Define Any Table Width Over 450 Pixels

Never assume that your visitors have the same size screen that you have.

When you see a page that looks like this you know that it couldn't possibly look that bad on the person's computer who made the page. This table was purposely made too wide (width=120%) so that you can see the problem. If you want to define a width, use width=100% or width=80%, not width=500 or width=600.